ABB FSM4000 - Connection Examples for Peripherals (Incl. HART)

FSM4000 ELECTROMAGNETIC FLOWMETER | DS/FSM4000-EN REV. L
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Connection examples for peripherals (incl. HART)
Current output
I
internal
E
external
Figure 38: Current output active with / without HART protocol (4 ... 20 mA)
Current output active with / without HART protocol (4 ... 20 mA)
Terminals
31, 32
Current output
can be selected via software
Function
Active
0/4 ... 20 mA (0 Ω ≤ RB ≤ 560 Ω)
0/2 ... 10 mA (0 Ω ≤ RB ≤ 1120 Ω)
(for HART only 4 ... 20 mA)
Switch output
I
internal
E
external
Figure 39: Switch output for system monitoring, Max. / Min. alarm for empty meter
tube or forward / reverse signal
Switch output for system monitoring
Terminals
41, 42
Current output
can be selected via software
Function
Passive
• ‘closed’:
0 V ≤ UCEL ≤ 2 V, 2 mA ≤ ICEL ≤ 220 mA
• ‘open’:
16 V ≤ UCEH ≤ 30 V, 0 mA ≤ ICEH ≤ 2 mA
Note
Horn and alarm light are shown only as examples. Other
suitable devices such as bells, sirens, buzzers, etc., can also
be used.
Switch input
I
internal
E
external
Figure 40: Switch input for external totalizer reset and external zero return
Switch input, passive
Terminals
81, 82
Current output
can be selected via software
Function
Passive
• ‘On’:
16 V ≤ UKL ≤ 30 V
• ‘Off’:
0 V ≤ UKL ≤ 2 V
Ri = 2 kΩ